<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>系统首页面</title>
</head>
<body>
系统首页面
<img id="checkCode" src="check/code" width="150" height="50" alt="验证码" />
<a href="javascript:void(0)" onclick="changeCode()">看不清，换一张？</a>
<!--<span style="float: right"><a href="javascript:void(0)" onclick="changeCode();">看不清，换一张？</a></span>-->
</body>
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
<script>
    //更换验证码
    function changeCode() {
        $("#checkCode").attr("src","check/code#"+new Date().getTime());
    }
</script>
</html>